# BR-DEC-13

> The allowed maximum number of decimals for the Invoice total VAT amount (BT-110) is 2.

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/br-dec-13

## Official rule text

The allowed maximum number of decimals for the Invoice total VAT amount (BT-110) is 2.

## Why did my invoice fail BR-DEC-13?

The Invoice total VAT amount (BT-110), the sum of VAT across all VAT breakdown categories, must be expressed with at most two decimals. Capping it at 2 decimals keeps it consistent with the per-category VAT amounts and the tax-inclusive total.

## Common causes

- Summing category VAT amounts that were not rounded to 2 decimals
- Applying a VAT rate to the taxable base without rounding the result
- Floating-point accumulation of VAT lines

## How do I fix it?

```
Round the VAT total: <cbc:TaxAmount currencyID="EUR">495.00</cbc:TaxAmount> in the document-level cac:TaxTotal.
```